# Copyright (c) Facebook, Inc. and its affiliates.

# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.

from __future__ import absolute_import, division, print_function, unicode_literals

from wadebug import results
from wadebug.wa_actions import docker_utils
from wadebug.wa_actions.base import WAAction


WEBAPP_PRIVATE_PORT = 443
WEBAPP_PRIVATE_PORT_PROTOCOL = "tcp"


class CheckWebappPortAction(WAAction):
    user_facing_name = "check_webapp_port"
    short_description = "Check if webapp maps container port {} to host".format(
        WEBAPP_PRIVATE_PORT
    )

    @classmethod
    def _run(cls, config, *args, **kwargs):
        running_waweb_containers = docker_utils.get_running_waweb_containers()

        short_error_message = "Check webapp port failed"

        if not running_waweb_containers:
            return results.Problem(
                cls,
                short_error_message,
                "There is no waweb container running",
                "Please check results from other actions to diagnose",
            )

        waweb_container = running_waweb_containers[0]
        port_bindings = docker_utils.get_container_port_bindings(waweb_container)

        for key in port_bindings:
            if key == "{}/{}".format(WEBAPP_PRIVATE_PORT, WEBAPP_PRIVATE_PORT_PROTOCOL):
                return results.OK(cls)

        return results.Problem(
            cls,
            short_error_message,
            "Port {} inside the webapp container needs to be mapped to host".format(
                WEBAPP_PRIVATE_PORT
            ),
            "Please start the waweb container with port binding: "
            '\nports:\n\t- [Public Port]:{}"'.format(WEBAPP_PRIVATE_PORT),
        )